Question

C#怎样实现http请求webservice返回xml数据

Answer 1

WebService 返回的数据本身就是XML

Answer 2

使用AJAX

function getXMLHTTP() {
var xmlhttp;
if (window.ActiveXObject)
{
//IE
try
{
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e)
{
xmlhttp = new ActiveXObject("Msxml2.XMLHTP");
}
}
else
{
//FireFox
xmlhttp = new XMLHttpRequest();
}

return xmlhttp;
}

var XMLHttpObj;

function GetDOMCity1()
{
var city = document.getElementById("ctl00_ContentPlaceHolder1_ddl_Province").value;
XMLHttpObj = getXMLHTTP();
XMLHttpObj.open("POST", "WebService.asmx/ShowCity", false);
XMLHttpObj.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
XMLHttpObj.onreadystatechange = proc;
XMLHttpObj.send("provinceId=" + city);
}
function proc()
{
if (XMLHttpObj.readyState == 4)
{

if (XMLHttpObj.status == 200)
{
alert(XMLHttpObj.responsXML);
}
}
}